Cindy saved $15 in the first month, $30 in the second month, $45 in the third month, and so forth. The amount of money she saved in the last month was $120. How much did Cindy save in all?
Quah Hui Boon Sim Zi Ying Ling Kuan Hur Nicolette Claresta Yeo Justin Tang Chan Yan Kei Gan Jia Jie Sarah Wee
Class Committee
Class Monitor: Teo Xue Shen Class Monitoress: Jessadelle Ng Prefects:Jerryl, Jonas, Joseph, Jo-lynn, Kate, Wei Li, Hannah, Nicolette, Si Qi, Ai Xin IT monitors: Jerryl Chong, Koh Jia Yi Math Rep: Sim Zi Ying, Ling Kuan Hur Eng Rep: Sarah, Sean Sci Rep:Gidane, Nigelle Phone Rep:De Liang Eye Care monitors:Yan Kei Re-cycling monitors:Yang Dingg,Hui Boon National Education monitors: Learning Journey monitors:
Our teachers:
Form Teacher/Maths: Ms Jan PE/HE:Ms Ann HCL/Art:Miss Lim Chye Kheng Sci/EL: Mrs Khoo Saw Choo ME:Mr Lim Pek Thai Music:Mdm Goh Swee Jee SS: Mdm Julia Ho
12 comments:
$15 x 8=$90 $90 + $120= $210
$15+$30+$45+$60+$75+$90+$105+$120=540
$15+$30+$45+$60+$75+$90+$105+120=$540
15+30+45+60+75+90+105+120=$540
month 1 2 3......
$saved 15 30 45......
Total$save 45 90
1.By 3rd month,$saved=3x15=45
2.By 3rd month,total$saved=(1+2+3)x15
=90
By what month will the $ saved be $120?
Since 8x15=$120
so,....
1.by 8th month,$ saved=8x15=120
2.By 8th month,total$saved=(1+2+3+4+5+6+7+8)x15
=$540
Answer is $540
540
$15+$30+$45+$60+$75+$90+$105+$120=$540
$540
$15+$30+$45+$60+$75+$90+$105+$120=$540
Mrs Jan Here are the steps.
415+$30+$45+$60+$75+$90=$105+$120=$540
Here is the answer.
$540
Done by Jarren Tay Class 4J
Ms Jan I got the answers.
$15+$30+$45+$60+$75+$90+$105+$120=$540
From Bryan Lim 4J
the answer 540
xavier
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